Ray Optics and Optical Instruments

Related Questions

• A virtual image larger than the object can be obtained by

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• A beam of monochromatic blue light of wavelength 4200Å in air travels in water ($\mu =4/3$). Its wavelength in water will be

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• Two thin lenses, one of focal length + 60 cm and the other of focal length – 20 cm are put in contact. The combined focal length is

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• A thin convex lens of refractive index 1.5 has a focal length of 15 cm in air. When the lens is placed in liquid of refractive index 4/3 , its focal length will be

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• A rectangular tank of depth 8 meter is full of water ($\mu =4/3$), the bottom is seen at the depth

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